Windows 7 RAM problem

CHiLL · 22-03-2009, 10:25

I installed Windows 7 x64 onto my machine yesterday, but its saying only 3.25GB of my 4GB is useable. The machine specs I'm using are in my signature.

I was lead to believe that a 64-bit operating system could recognise above the 4GB mark? My old Windows Vista installation seemed to.

Here's a screen shot of the problem.

smee init · 22-03-2009, 15:16

Is it just telling you that 0.75GB is already being used by background services and applications that you have running and so telling you that 3.25GB is available? one way to test that is to run afew applications and see it changes. Am just guessing on this one as haven't had the opportunity of playing around with windows 7.

boroboi · 22-03-2009, 15:17

I'm not sure what's going on there.

My Windows 7 install picks up my RAM fine. What build are you running?

No smee, it's detecting RAM as though he's using a 32-bit OS. That measurement doesn't take into account whats in use, it should detect it all.

smee init · 22-03-2009, 15:47

Hi have a look at this forum thread especially the last post very interesting:

http://www.neowin.net/forum/lofivers...p/t742730.html

---------- Post added at 16:47 ---------- Previous post was at 16:44 ----------

Also alot of people saying that Memory Remapping is required on 64-bit OS.

22-03-2009, 16:13

Have you ever installed a 64 bit OS before? My last mobo before this one limited me not the OS. P something DH deluxe

Edit read OP properly and you have

My P5Q pro has always seen 4 gig

Ive never come across anything like that screen shot before. My win 7 picks up all mine also

Uncle Peter · 22-03-2009, 16:47

I came across something like that a while ago with a 2003R2 (x64) box cobbled together to run vmware. It turned out to be down to the mobo not liking a 4x1GB RAM configuration. That was an Asus board but I can't remember exactly which one.

boroboi · 22-03-2009, 18:15

Quote:

Originally Posted by smee init

Hi have a look at this forum thread especially the last post very interesting:

http://www.neowin.net/forum/lofivers...p/t742730.html

---------- Post added at 16:47 ---------- Previous post was at 16:44 ----------

Also alot of people saying that Memory Remapping is required on 64-bit OS.

edit

Took a poop on myself and made a mistake

CHiLL · 22-03-2009, 18:23

I'm not at that computer again until the weekend probably.

I had Windows Vista x64 previously, and that detected all 4GB. (4x 1GB sticks) So it isn't a motherboard problem.

Could it be a dodgy copy of Windows 7? It's build 7042 or 7057. I downloaded it via RapidShare, since it's not available for public download any more.

I don't like the fact that Microsoft got rid of the Quick Launch. I loved that. (I know it is still available via new toolbar, but it isn't the same and can't contain a lot of shortcuts in the arrow expansion thing)

boroboi · 23-03-2009, 14:40

Memory remapping is always active on newer boards, it comes as a standard so you are unable to disable it. If you run a 32-bit OS, it will automatically disable it for you.

If you look in Everest under the memory options, scroll to the bottom and it will tell you if PAE (Physical Address Extension) is active. That's just another name for Mem Remapping.

It should be active on a 64-bit OS by default.

CHiLL · 23-03-2009, 15:37

It says it is active.